体重对黑鮶能量收支的影响

EFFECTS OF BODY WEIGHT ON ENERGY BUDGET OF SEBASTODES FUSCESCENS

以玉筋鱼为饵料及最大摄食量条件下，采用室内流水模拟实验法研究了体重对黑FDC6能量收支各组分和能量分配模式的影响。结果表明，黑鮶的摄食量、生长量、总代谢量、排泄量及生态转换效率均随体重增大而降低，二者之间的定量关系均可用线性方程定量描述；其中排泄量随体重变化幅度很小。 依据各收支过程的量化结果， 可得到真鲷的能量分配模式。 30.50±8.66g： １00C＝3.74F+5.92U+44.25R +46.09 G；１29.32±１5.１7g：１00C＝6.2１F + 6.62U + 49.55R + 40.74G；20１.１7±2１.37g：１00C＝3.１5F + 7.20U + 53.39R + 36.45G。黑FDC6的各能量收支分配率随体重增大有较显著差异； 代谢能分配率和排泄能分配率随体重增大呈线性增加变化趋势，而生长能分配率却恰恰相反。

The energy budget of different body weight Sebastode s fuscescens determined by the continuous-flow simulating method in laboratory. Ｓhowed that excr etion energy (U), total metabolism energy (R) and growth energy (G) all tended to decrease with body weight, and can be described by linear equations but that U value's variation range is relatively smaller. The energy assigning models can be expressed with the following budget formulas:30.50±8.66g： １00C＝3.74F + 5.92U + 44.25R +46.09 G １29.32±１5.１7g：１00C＝6.2１F + 6.62U + 49.55R + 40.74G 20１.１7±2１.37g：１00C＝3.１5F + 7.20U + 53.39R + 36.45G The assigning models changed with the body weight. In the models,the assigning rates of metabolism and excretion energy increased linearly with inerease of bod y weight, but that of growth energy had opposite trend.